United Kingdom, Oct. 6 -- Eric Dane told Aaron Lazar about his ALS battle months before he went public with his health crisis.

The Grey's Anatomy star revealed in April that he is battling ALS (amyotrophic lateral sclerosis) - also known as motor neurone disease - and now fellow actor Aaron - who also has ALS - has revealed Eric confided in him about his illness while they filming new Amazon thriller series Countdown together.

Broadway star Aaron told Variety: "When I met Eric and he shook my hand, I could see and feel something was off.

"I asked him what was going on. Eric said to me: 'I think I have what you have'."

Aaron filmed a guest spot in the show alongside regular castmember Eric and he revealed the team behind the scenes wer...